Ferroli i25 Instructions For Use, Installation And Maintenance - I25 / I29
i25 / i29
6
EN
cod. 3541I730 - Rev. 02 - 11/2016
Other coaxial connections
fig. 13 - Examples of connection with coaxial pipes (
= Air /
= Fumes)
Table. 2 - Typology
For coaxial connection, fit the unit with one of the following starting accessories. For the
wall hole dimensions, refer to the figure on the cover. Any horizontal sections of the fume
exhaust must be kept sloping slightly towards the boiler, to prevent possible condensate
from flowing back towards the outside and causing dripping.
fig. 14 - Starting accessory for coaxial ducts
Table. 3 - Baffles for coaxial ducts
Connection with separate pipes
fig. 15 - Examples of connection with separate pipes (
= Air /
= Fumes)
Table. 4 - Typology
For connection of the separate ducts, fit the unit with the following starting accessory:
fig. 16 - Starting accessory for separate ducts
Before proceeding with installation make sure the maximum permissible length has not
been exceeded, by means of a simple calculation:
1.
Completely establish the layout of the system of split flues, including accessories
and outlet terminals.
2.
Consult the table 6 and identify the losses in meq (equivalent metres) of every com-
ponent, according to the installation position.
3.
Check that the sum total of losses is less than or equal to the maximum permissible
length in table 5.
Table. 5 - Baffles for separate ducts
A
The flue section to be installed with a minimum 3° (55mm per meter) fall back
to the boiler.
The air intake pipe should be installed level (or with a slight fall away from the
boiler to prevent rain ingress).
The air intake terminal must be below or to the side of the flue outlet terminal,
NOT above.
Type
Description
C1X
Wall horizontal exhaust and inlet
C3X
Roof vertical exhaust and inlet
Model i25
Coaxial 60/100
Coaxial 80/125
Max. permissible length
6 m
12 m
Reduction factor 90° bend
1 m
0.5 m
Reduction factor 45° bend
0.5 m
0.25 m
Baffle to use
0 ÷ 2 m
Ø 45
0 ÷ 6 m
Ø 45
2 ÷ 4 m
Ø 50
6 ÷ 12 m
no baffle
4 ÷ 6 m
no baffle
Model i29
Coaxial 60/100
Coaxial 80/125
Max. permissible length
4 m
12 m
Reduction factor 90° bend
1 m
0.5 m
Reduction factor 45° bend
0.5 m
0.25 m
Baffle to use
0 ÷ 2 m
Ø 50
0 ÷ 6 m
Ø 50
2 ÷ 4 m
no baffle
6 ÷ 12 m
no baffle
C
1X
C
1X
C
3X
C
3X
C
3X
C
1X
Ø 100
Ø 60
041001X0
Ø 100
Ø 60
120
142
041002X0
Ø 80
Ø 127
120
147
041006X0
Type
Description
C1X
Wall horizontal exhaust and intake. The inlet/outlet terminals must be concentric or close enough to be
undergo similar wind conditions (within 50 cm)
C3X
Roof vertical exhaust and intake. Inlet/outlet terminals like for C12
C5X
Wall or roof exhaust and intake separate or in any case in areas with different pressures. The exhaust and
intake must not be positioned on opposite walls.
C6X
Intake and exhaust with separately certified pipes (EN 1856/1)
B2X
Intake from installation room and wall or roof exhaust
IMPORTANT - THE ROOM MUST BE PROVIDED WITH APPROPRIATE VENTILATION
Model i25
Separate ducts
Max. permissible length
60 m
eq
Baffle to use
0 ÷ 20 m
eq
Ø 45
20 ÷ 45 m
eq
Ø 50
45 ÷ 60 m
eq
No baffle
Model i29
Separate ducts
Max. permissible length
55 m
eq
Baffle to use
0 ÷ 35 m
eq
Ø 50
35 ÷ 55 m
eq
No baffle
C
5x
C
3x
B
2x
C
1x
max 50 cm
Ø 81
Ø 81
Ø
65
Ø
87
Ø
65
041039X0